DocumentCode :
1734545
Title :
Dynamic modeling and control of coal-slurry membrane wall entrained flow gasifier
Author :
Yang Zhiwei ; Xue Yali ; Wang Zhe ; Li Donghai ; Li Zheng ; Ni Weidou
Author_Institution :
Dept. of Thermal Eng., Tsinghua Univ., Beijing, China
fYear :
2013
Firstpage :
7611
Lastpage :
7616
Abstract :
The sturdy of slag flow behavior and its control method is of significance for the development of membrane wall entrained flow gasification technology. This paper established a dynamic gasifier model for an oxygen-staged membrane wall gasifier, using reactor network modeling concept. The model can not only predict gasifier outlet parameters, but also provide a reasonable temperature distribution inside the gasifier, which benefits the slag flow calculation. After analyzing the dynamic characteristics of the gasifier using the model, we proposed a preliminary control strategy for temperature and slag thickness control, and carried out some control simulations under coal property disturbances. The results showed that the control system could adjust the top and bottom slag thickness to reasonable values when they exceeded safe ranges. The manipulation of secondary oxygen ratio could enhance the control ability on the top slag thickness control.
Keywords :
chemical reactors; coal; flow; membranes; slag; coal-slurry membrane; control method; dynamic gasifier model; dynamic modeling; flow gasification technology; flow gasifier; membrane wall; reactor network modeling; slag; Analytical models; Electronic mail; Nickel; Power system dynamics; Slag; Thermal engineering; Thickness control; Control; Dynamic model; Entrained flow gasifier; Membrane wall gasifier; Slag;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Control Conference (CCC), 2013 32nd Chinese
Conference_Location :
Xi´an
Type :
conf
Filename :
6640779
Link To Document :
بازگشت